What is the circuit board behind drivers seat of an 81 Corvette?

There isn't one single, universally named circuit board behind the driver's seat of a 1981 Corvette. That area houses a collection of components related to the car's electrical system, but these are not typically organized onto a single large circuit board like you might find in a modern car's computer system.

Instead, you'll likely find:

* Various relays: These control things like the fuel pump, headlights, and other electrical systems. They may be mounted on a small bracket or individually fastened.

* Fuse box/block: Protecting the circuits from overloads. This is a common component behind the seats in many cars.

* Wiring harnesses and connectors: A large bundle of wires connecting various components in the car.

* Possibly some smaller circuit boards: These might be associated with specific functions, but would be much smaller than a central control unit.

The 1981 Corvette's electrical system is relatively simple compared to modern vehicles. It doesn't have a sophisticated central computer controlling all aspects. The components behind the seat are more of a distributed collection of individual elements.